说明：  电表在处理某一指令时，响应需要一定的时间，如果同时存在其他的重叠写入指令，可能引起电表自我保护，进入锁定状态。所以在程序设计中，应事先考虑电表响应某项指令，反馈数据所需要的最大时间长度（应与数据长度，串口传输速度有关）。
(Meter in a treatment directive, the response to the need for a certain period of time, if at the same time there are other overlapping write instructions, may cause meter self-protection, to enter the locked state. Therefore, program design should be considered in advance of a meter in response to commands, feedback data required for the greatest length of time (should be consistent with the data length, the relevant serial transmission speed).)